⚡ Natural Selection Film
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Natural Selection (2011)
We create safe places for brown people to experience over the top service and extreme hospitality. Welcome to our website. This year we celebrate almost 20 years in business. I can still remember my first paying client in my small bedroom in my Mother's house. Since then we have had celebrity clientele come to Duafe. And that's all great I'm still the young girl in her bedroom doing hair for the women on my block. Please let us know how we can better serve you.
Please browse this page to read a few of the many articles where our founder spoke about different issues and opportunities. Holistic Hair Care as natural and as deep as You. Free Consultation. Slide 1 Welcome. Slide 2 Virtual Consult. Time slots are limited. Home furnishings like upholstery, carpets and artwork stay looking fresh and new longer with less exposure to sun. Solar films help keep indoor temperatures more stable, so heating and cooling systems run less and use less energy. Create a more relaxing, eye-friendly environment for work or play with electronics from phones to wide-screen TVs. Take a Look. Dual-Reflective Window Film By pairing a mirrored exterior side with a more subtle interior side, dual-reflective films provide significant solar control while maintaining clear views to the outside after dark.
Harmony Window Film Excessive heat and glare virtually disappears with Harmony, a multi-layered film with proprietary components. Animals mainly have bilateral or mirror symmetry , as do the leaves of plants and some flowers such as orchids. Animals that move in one direction necessarily have upper and lower sides, head and tail ends, and therefore a left and a right. The head becomes specialized with a mouth and sense organs cephalization , and the body becomes bilaterally symmetric though internal organs need not be. Plants often have radial or rotational symmetry , as do many flowers and some groups of animals such as sea anemones. Rotational symmetry is also found at different scales among non-living things including the crown-shaped splash pattern formed when a drop falls into a pond, and both the spheroidal shape and rings of a planet like Saturn.
Radial symmetry suits organisms like sea anemones whose adults do not move: food and threats may arrive from any direction. Fivefold symmetry is found in the echinoderms, the group that includes starfish, sea urchins, and sea lilies. The reason for the fivefold penta-radiate symmetry of the echinoderms is puzzling. Early echinoderms were bilaterally symmetrical, as their larvae still are.
Sumrall and Wray argue that the loss of the old symmetry had both developmental and ecological causes. Crystals in general have a variety of symmetries and crystal habits; they can be cubic or octahedral, but true crystals cannot have fivefold symmetry unlike quasicrystals. Fractals are infinitely self-similar, iterated mathematical constructs having fractal dimension. For example, the leaves of ferns and umbellifers Apiaceae are only self-similar pinnate to 2, 3 or 4 levels. Fern-like growth patterns occur in plants and in animals including bryozoa, corals, hydrozoa like the air fern, Sertularia argentea, and in non-living things, notably electrical discharges.
Lindenmayer system fractals can model different patterns of tree growth by varying a small number of parameters including branching angle, distance between nodes or branch points internode length , and number of branches per branch point. Fractal-like patterns occur widely in nature, in phenomena as diverse as clouds, river networks, geologic fault lines, mountains, coastlines, animal coloration, snow flakes, crystals, blood vessel branching, and ocean waves.
For example, in the nautilus, a cephalopod mollusc, each chamber of its shell is an approximate copy of the next one, scaled by a constant factor and arranged in a logarithmic spiral. Given a modern understanding of fractals, a growth spiral can be seen as a special case of self-similarity. Plant spirals can be seen in phyllotaxis , the arrangement of leaves on a stem, and in the arrangement parastichy of other parts as in composite flower heads and seed heads like the sunflower or fruit structures like the pineapple and snake fruit, as well as in the pattern of scales in pine cones, where multiple spirals run both clockwise and anticlockwise.
These arrangements have explanations at different levels — mathematics, physics, chemistry, biology — each individually correct, but all necessary together. Phyllotaxis spirals can be generated mathematically from Fibonacci ratios : the Fibonacci sequence runs 1, 1, 2, 3, 5, 8, 13… each subsequent number being the sum of the two preceding ones. Fibonacci ratios approximate the golden angle , From the point of view of physics, spirals are lowest-energy configurations which emerge spontaneously through self-organizing processes in dynamic systems.
From the point of view of chemistry, a spiral can be generated by a reaction-diffusion process, involving both activation and inhibition. Phyllotaxis is controlled by proteins that manipulate the concentration of the plant hormone auxin, which activates meristem growth, alongside other mechanisms to control the relative angle of buds around the stem. From a biological perspective, arranging leaves as far apart as possible in any given space is favoured by natural selection as it maximises access to resources , especially sunlight for photosynthesis. Alongside fractals, chaos theory ranks as an essentially universal influence on patterns in nature.
There is a relationship between chaos and fractals—the strange attractors in chaotic systems have a fractal dimension. Vortex streets are zigzagging patterns of whirling vortices created by the unsteady separation of flow of a fluid, most often air or water, over obstructing objects. Smooth laminar flow starts to break up when the size of the obstruction or the velocity of the flow become large enough compared to the viscosity of the fluid.
Meanders are sinuous bends in rivers or other channels, which form as a fluid, most often water, flows around bends. As soon as the path is slightly curved, the size and curvature of each loop increases as helical flow drags material like sand and gravel across the river to the inside of the bend. The outside of the loop is left clean and unprotected, so erosion accelerates, further increasing the meandering in a powerful positive feedback loop.
Waves are disturbances that carry energy as they move. Mechanical waves propagate through a medium — air or water, making it oscillate as they pass by. Wind waves are sea surface waves that create the characteristic chaotic pattern of any large body of water, though their statistical behaviour can be predicted with wind wave models. As waves in water or wind pass over sand, they create patterns of ripples. When winds blow over large bodies of sand, they create dunes , sometimes in extensive dune fields as in the Taklamakan desert. Barchans or crescent dunes are produced by wind acting on desert sand; the two horns of the crescent and the slip face point downwind. Sand blows over the upwind face, which stands at about 15 degrees from the horizontal, and falls on to the slip face, where it accumulates up to the angle of repose of the sand, which is about 35 degrees.
When the slip face exceeds the angle of repose, the sand avalanches, which is a nonlinear behaviour: the addition of many small amounts of sand causes nothing much to happen, but then the addition of a further small amount suddenly causes a large amount to avalanche. A soap bubble forms a sphere, a surface with minimal area — the smallest possible surface area for the volume enclosed. Two bubbles together form a more complex shape: the outer surfaces of both bubbles are spherical; these surfaces are joined by a third spherical surface as the smaller bubble bulges slightly into the larger one. A foam is a mass of bubbles; foams of different materials occur in nature. For example, a film may remain nearly flat on average by being curved up in one direction say, left to right while being curved downwards in another direction say, front to back.
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